Of course, it is unpleasant to find out that a colleague came up with you an insulting nickname "Behemoth under mayonnaise", but Tatiana Sergeeva has no time to be upset because of nonsense. Professor Alexei Burkin turned to the office of a special team: it seems that someone from family members pours a strong laxative to the doctor. The situation at first glance is stupid, most likely it is someone's prank . According to the professor, everyone in their family is kind to each other, and yet he needs to bring the attacker to clean water. Detectives decide to send Tanya to the house of Burkina under the guise of his relative from the Far East, Louise. She is supposed to have come to Moscow for business. It turns out that in the house of the professor reigns by no means good relations .. Daughter-in-law Irina throws herself in anger at everyone, and the second daughter-in-law - confectioner Luba - on the contrary, is nauseated . And Sergeeva begins an investigation . A specialist in searches Timofey Volyn comes to Burkin . After drinking a compote cooked for Alexei, he loses consciousness. Who could poison him and why? Detectives of a special brigade find out that in the childhood of Alexei's wife there was a black spot . This discovery allows them to reach out to the attacker. But... everything suddenly turns out to be completely wrong! The seemingly slender and logical pyramid of evidence instantly collapsed and turned into ruins. Daria Dontsova is the most popular and sought-after author in our country, a favorite of millions of readers. In Russia sold more than 200 million copies of her books Her creativity fills hearts and souls with light, optimism, joy, confidence in the future!